[analyzer] Refactoring: lib/Checker -> lib/GR and libclangChecker -> libclangGRCore

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122421 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 161 deletions

diff --git a/lib/Checker/ChrootChecker.cpp b/lib/Checker/ChrootChecker.cpp
deleted file mode 100644
index 2108094ae1..0000000000
--- a/lib/Checker/ChrootChecker.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-//===- Chrootchecker.cpp -------- Basic security checks ----------*- C++ -*-==//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file defines chroot checker, which checks improper use of chroot.
-//
-//===----------------------------------------------------------------------===//
-
-#include "GRExprEngineExperimentalChecks.h"
-#include "clang/GR/BugReporter/BugType.h"
-#include "clang/GR/PathSensitive/CheckerVisitor.h"
-#include "clang/GR/PathSensitive/GRState.h"
-#include "clang/GR/PathSensitive/GRStateTrait.h"
-#include "clang/GR/PathSensitive/SymbolManager.h"
-#include "llvm/ADT/ImmutableMap.h"
-using namespace clang;
-
-namespace {
-
-// enum value that represent the jail state
-enum Kind { NO_CHROOT, ROOT_CHANGED, JAIL_ENTERED };
-  
-bool isRootChanged(intptr_t k) { return k == ROOT_CHANGED; }
-//bool isJailEntered(intptr_t k) { return k == JAIL_ENTERED; }
-
-// This checker checks improper use of chroot.
-// The state transition:
-// NO_CHROOT ---chroot(path)--> ROOT_CHANGED ---chdir(/) --> JAIL_ENTERED
-//                                  |                               |
-//         ROOT_CHANGED<--chdir(..)--      JAIL_ENTERED<--chdir(..)--
-//                                  |                               |
-//                      bug<--foo()--          JAIL_ENTERED<--foo()--
-class ChrootChecker : public CheckerVisitor<ChrootChecker> {
-  IdentifierInfo *II_chroot, *II_chdir;
-  // This bug refers to possibly break out of a chroot() jail.
-  BuiltinBug *BT_BreakJail;
-
-public:
-  ChrootChecker() : II_chroot(0), II_chdir(0), BT_BreakJail(0) {}
-  
-  static void *getTag() {
-    static int x;
-    return &x;
-  }
-  
-  virtual bool evalCallExpr(CheckerContext &C, const CallExpr *CE);
-  virtual void PreVisitCallExpr(CheckerContext &C, const CallExpr *CE);
-
-private:
-  void Chroot(CheckerContext &C, const CallExpr *CE);
-  void Chdir(CheckerContext &C, const CallExpr *CE);
-};
-
-} // end anonymous namespace
-
-void clang::RegisterChrootChecker(GRExprEngine &Eng) {
-  Eng.registerCheck(new ChrootChecker());
-}
-
-bool ChrootChecker::evalCallExpr(CheckerContext &C, const CallExpr *CE) {
-  const GRState *state = C.getState();
-  const Expr *Callee = CE->getCallee();
-  SVal L = state->getSVal(Callee);
-  const FunctionDecl *FD = L.getAsFunctionDecl();
-  if (!FD)
-    return false;
-
-  ASTContext &Ctx = C.getASTContext();
-  if (!II_chroot)
-    II_chroot = &Ctx.Idents.get("chroot");
-  if (!II_chdir)
-    II_chdir = &Ctx.Idents.get("chdir");
-
-  if (FD->getIdentifier() == II_chroot) {
-    Chroot(C, CE);
-    return true;
-  }
-  if (FD->getIdentifier() == II_chdir) {
-    Chdir(C, CE);
-    return true;
-  }
-
-  return false;
-}
-
-void ChrootChecker::Chroot(CheckerContext &C, const CallExpr *CE) {
-  const GRState *state = C.getState();
-  GRStateManager &Mgr = state->getStateManager();
-  
-  // Once encouter a chroot(), set the enum value ROOT_CHANGED directly in 
-  // the GDM.
-  state = Mgr.addGDM(state, ChrootChecker::getTag(), (void*) ROOT_CHANGED);
-  C.addTransition(state);
-}
-
-void ChrootChecker::Chdir(CheckerContext &C, const CallExpr *CE) {
-  const GRState *state = C.getState();
-  GRStateManager &Mgr = state->getStateManager();
-
-  // If there are no jail state in the GDM, just return.
-  const void* k = state->FindGDM(ChrootChecker::getTag());
-  if (!k)
-    return;
-
-  // After chdir("/"), enter the jail, set the enum value JAIL_ENTERED.
-  const Expr *ArgExpr = CE->getArg(0);
-  SVal ArgVal = state->getSVal(ArgExpr);
-  
-  if (const MemRegion *R = ArgVal.getAsRegion()) {
-    R = R->StripCasts();
-    if (const StringRegion* StrRegion= dyn_cast<StringRegion>(R)) {
-      const StringLiteral* Str = StrRegion->getStringLiteral();
-      if (Str->getString() == "/")
-        state = Mgr.addGDM(state, ChrootChecker::getTag(),
-                           (void*) JAIL_ENTERED);
-    }
-  }
-
-  C.addTransition(state);
-}
-
-// Check the jail state before any function call except chroot and chdir().
-void ChrootChecker::PreVisitCallExpr(CheckerContext &C, const CallExpr *CE) {
-  const GRState *state = C.getState();
-  const Expr *Callee = CE->getCallee();
-  SVal L = state->getSVal(Callee);
-  const FunctionDecl *FD = L.getAsFunctionDecl();
-  if (!FD)
-    return;
-
-  ASTContext &Ctx = C.getASTContext();
-  if (!II_chroot)
-    II_chroot = &Ctx.Idents.get("chroot");
-  if (!II_chdir)
-    II_chdir = &Ctx.Idents.get("chdir");
-
-  // Ingnore chroot and chdir.
-  if (FD->getIdentifier() == II_chroot || FD->getIdentifier() == II_chdir)
-    return;
-  
-  // If jail state is ROOT_CHANGED, generate BugReport.
-  void* const* k = state->FindGDM(ChrootChecker::getTag());
-  if (k)
-    if (isRootChanged((intptr_t) *k))
-      if (ExplodedNode *N = C.generateNode()) {
-        if (!BT_BreakJail)
-          BT_BreakJail = new BuiltinBug("Break out of jail",
-                                        "No call of chdir(\"/\") immediately "
-                                        "after chroot");
-        BugReport *R = new BugReport(*BT_BreakJail, 
-                                     BT_BreakJail->getDescription(), N);
-        C.EmitReport(R);
-      }
-  
-  return;
-}